The purpose of die steel quenching die steel quenching is to heat the die steel to a human set temperature or Ac above and keep a certain time, and then quickly cool down, this process is called quenching.

In die steel, the main purpose of quenching is to convert as much of the alloying elements as possible into martensite after austenitization in order to obtain carbide dispersion and precipitation after tempering at the appropriate temperature, and the tempered martensitic organization provides the desired overall mechanical properties and wear resistance. . In the heat treatment process, quenching is an extremely important task, the success of which depends mainly on the rate of heating, quenching temperature, holding time and the subsequent cooling method.

As for the heating speed, when the heating is too slow, the workpiece is easy to oxidation decarburization, low service life and high cost. However, if the temperature is too high, there will be a temperature difference between the surface and the center of the mold. The greater the temperature difference, the greater the thermal stress, and therefore the greater the possibility of warping and cracking. (Chongqing Meida)